#3056 Add tests for parsed C/C++ -std flag handling

test/command_callback/test_c_clang_command_callbacks.vader

@@ -2,14 +2,25 @@ Before:
   Save g:ale_c_parse_makefile
   let g:ale_c_parse_makefile = 0
 
+  let g:get_cflags_return_value = ''
+
+  runtime autoload/ale/c.vim
+
+  function! ale#c#GetCFlags(buffer, output) abort
+    return g:get_cflags_return_value
+  endfunction
+
   call ale#assert#SetUpLinterTest('c', 'clang')
   let b:command_tail = ' -S -x c -fsyntax-only -iquote'
   \   . ' ' . ale#Escape(getcwd())
   \   . ' -std=c11 -Wall -'
 
 After:
+  unlet! g:get_cflags_return_value
   unlet! b:command_tail
 
+  runtime autoload/ale/c.vim
+
   call ale#assert#TearDownLinterTest()
 
 Execute(The executable should be configurable):
@@ -18,3 +29,9 @@ Execute(The executable should be configurable):
   let b:ale_c_clang_executable = 'foobar'
 
   AssertLinter 'foobar', [ale#Escape('foobar') . b:command_tail]
+
+Execute(The -std flag should be replaced by parsed C flags):
+  let b:command_tail = substitute(b:command_tail, 'c11', 'c99 ', '')
+  let g:get_cflags_return_value = '-std=c99'
+
+  AssertLinter 'clang', ale#Escape('clang') . b:command_tail

test/command_callback/test_c_gcc_command_callbacks.vader

@@ -1,5 +1,13 @@
 Before:
   Save g:ale_c_parse_makefile
+  let g:get_cflags_return_value = ''
+
+  runtime autoload/ale/c.vim
+
+  function! ale#c#GetCFlags(buffer, output) abort
+    return g:get_cflags_return_value
+  endfunction
+
   let g:ale_c_parse_makefile = 0
 
   call ale#assert#SetUpLinterTest('c', 'gcc')
@@ -10,13 +18,22 @@ Before:
   \   . ' -std=c11 -Wall -'
 
 After:
-  call ale#assert#TearDownLinterTest()
-
+  unlet! g:get_cflags_return_value
   unlet! b:command_tail
 
+  runtime autoload/ale/c.vim
+
+  call ale#assert#TearDownLinterTest()
+
 Execute(The executable should be configurable):
   AssertLinter 'gcc', [ale#Escape('gcc') . b:command_tail]
 
   let b:ale_c_gcc_executable = 'foobar'
 
   AssertLinter 'foobar', [ale#Escape('foobar') . b:command_tail]
+
+Execute(The -std flag should be replaced by parsed C flags):
+  let b:command_tail = substitute(b:command_tail, 'c11', 'c99 ', '')
+  let g:get_cflags_return_value = '-std=c99'
+
+  AssertLinter 'gcc', ale#Escape('gcc') . b:command_tail

test/command_callback/test_cpp_clang_command_callbacks.vader

@@ -2,13 +2,25 @@ Before:
   Save g:ale_c_parse_makefile
   let g:ale_c_parse_makefile = 0
 
+  let g:get_cflags_return_value = ''
+
+  runtime autoload/ale/c.vim
+
+  function! ale#c#GetCFlags(buffer, output) abort
+    return g:get_cflags_return_value
+  endfunction
+
   call ale#assert#SetUpLinterTest('cpp', 'clang')
   let b:command_tail = ' -S -x c++ -fsyntax-only -iquote'
   \   . ' ' . ale#Escape(getcwd())
   \   . ' -std=c++14 -Wall -'
 
 After:
+  unlet! g:get_cflags_return_value
   unlet! b:command_tail
+
+  runtime autoload/ale/c.vim
+
   call ale#assert#TearDownLinterTest()
 
 Execute(The executable should be configurable):
@@ -17,3 +29,9 @@ Execute(The executable should be configurable):
   let b:ale_cpp_clang_executable = 'foobar'
 
   AssertLinter 'foobar', ale#Escape('foobar') . b:command_tail
+
+Execute(The -std flag should be replaced by parsed C flags):
+  let b:command_tail = substitute(b:command_tail, 'c++14', 'c++11 ', '')
+  let g:get_cflags_return_value = '-std=c++11'
+
+  AssertLinter 'clang++', ale#Escape('clang++') . b:command_tail

test/command_callback/test_cpp_gcc_command_callbacks.vader

@@ -2,6 +2,14 @@ Before:
   Save g:ale_c_parse_makefile
   let g:ale_c_parse_makefile = 0
 
+  let g:get_cflags_return_value = ''
+
+  runtime autoload/ale/c.vim
+
+  function! ale#c#GetCFlags(buffer, output) abort
+    return g:get_cflags_return_value
+  endfunction
+
   call ale#assert#SetUpLinterTest('cpp', 'gcc')
   let b:command_tail = ' -S -x c++'
   \   . ' -o ' . (has('win32') ? 'nul': '/dev/null')
@@ -9,7 +17,11 @@ Before:
   \   . ' -std=c++14 -Wall -'
 
 After:
+  unlet! g:get_cflags_return_value
   unlet! b:command_tail
+
+  runtime autoload/ale/c.vim
+
   call ale#assert#TearDownLinterTest()
 
 Execute(The executable should be configurable):
@@ -18,3 +30,9 @@ Execute(The executable should be configurable):
   let b:ale_cpp_gcc_executable = 'foobar'
 
   AssertLinter 'foobar', ale#Escape('foobar') . b:command_tail
+
+Execute(The -std flag should be replaced by parsed C flags):
+  let b:command_tail = substitute(b:command_tail, 'c++14', 'c++11 ', '')
+  let g:get_cflags_return_value = '-std=c++11'
+
+  AssertLinter 'gcc', ale#Escape('gcc') . b:command_tail